Cord safety device for a window covering

Abstract

A cord safety device for a window covering includes a first and a second body. The first body includes: a first pivot portion, disposed on a periphery; a first fixing portion, disposed on a periphery at a predetermined angle with respect to the first pivot portion; a first stop portion, disposed on an inner side of the first body and protruded towards the second body; a first recess, disposed on an upper periphery; and a guiding block, disposed on one end of the first stop portion adjacent to the first fixing portion, in which the guiding block has a guiding surface for guiding the cords. The second body includes: a second pivot portion, disposed corresponding to the first pivot portion; and a second fixing portion, disposed corresponding to the first fixing portion, thereby being separably fixed with the first fixing portion.

What is claimed is: 
     
       1. A cord safety device for a window covering, wherein the window covering comprises a head rail, a bottom rail, a covering material located between the head rail and the bottom rail, and several cords passing through the head rail and the covering material to reach the bottom rail; the cord safety device is used to limit or release at least two cords exposed at an outer side of the window covering, and the cord safety device comprises a first body and a second body corresponding to the first body, wherein
 the first body has a first inner side, and further comprises:
 a first pivot portion, disposed at a side periphery position of the cord; 
 a first fixing portion, disposed at an other side periphery position with respect to the first pivot portion; 
 a first stop portion, disposed at a predetermined position of the first inner side and protruded towards the second body; and 
 a first recess, disposed at a predetermined position of an upper periphery of the first body to provide at least two cords to slide therein; 
 wherein, the first pivot portion is located on a side of the first body and the first fixing portion is located on an opposite side of the first body along a direction perpendicular to the extending direction of the cords, such that the first pivot portion and the first fixing portion are horizontally disposed at both sides of the cords, separately; 
 
 the second body has a second inner side, and further comprises:
 a second pivot portion, disposed corresponding to the first pivot portion, so as to be pivoted to the first pivot portion; and 
 a second fixing portion, disposed corresponding to the first fixing portion, so as to be separably fixed with the first fixing portion. 
 
 
     
     
       2. The cord safety device as claimed in  claim 1 , wherein the first body further comprises a guiding block located on one end of the first stop portion adjacent to the first fixing portion; and the guiding block has a guiding surface for guiding the cords to move towards an embedded position of the first fixing portion and the second fixing portion. 
     
     
       3. The cord safety device as claimed in  claim 1 , wherein the second body further comprises a second stop portion disposed on the second inner side corresponding to the first stop portion, and a predetermined distance exists between the first stop portion and the second stop portion. 
     
     
       4. The cord safety device as claimed in  claim 3 , wherein the first stop portion and the second stop portion are configured into camber structures with downward concaves. 
     
     
       5. The cord safety device as claimed in  claim 1 , wherein the second body further comprises a second recess disposed corresponding to the first recess. 
     
     
       6. The cord safety device as claimed in  claim 5 , wherein the first recess or/and the second recess forms with an arc surface along an edge of each recess and adjacent to one end side of each fixing portion. 
     
     
       7. The cord safety device as claimed in  claim 2 , wherein at least one cord sequentially slides towards the first fixing portion along a path formed by the first stop portion, the guiding block, the guiding surface, and the first fixing portion in order, such that the first fixing portion is separated from the second fixing portion in opposite direction with the first pivot portion as an axis center, and then the first pivot portion and the second pivot portion are completely separated. 
     
     
       8. The cord safety device as claimed in  claim 1 , further comprising a first scarf portion and a second scarf portion, wherein the first scarf portion is disposed on the first body and protruded towards the second body, and the second scarf portion is disposed on the second body corresponding to position of the first scarf portion, thereby accommodating the first scarf portion. 
     
     
       9. The cord safety device as claimed in  claim 1 , further comprising a first scarf portion and a second scarf portion, wherein the first scarf portion is disposed on the first body and protruded towards the second body, and the second scarf portion is disposed on the second body corresponding to position of the first scarf portion, and protruded towards the first member, thereby being mutually embedded with the first scarf portion. 
     
     
       10. The cord safety device as claimed in  claim 1 , wherein the first pivot portion has a arc-shaped recess, and the second pivot portion has a pivot pivoted to the arc-shaped recess. 
     
     
       11. The cord safety device as claimed in  claim 1 , wherein the first stop portion further has a stop recess at one end adjacent to the first pivot portion, thereby fixing one of the cords to the first member. 
     
     
       12. The cord safety device as claimed in  claim 1 , wherein the second fixing portion is an elastic zigzag element, thereby being fixed to a corresponding position of the first fixing portion. 
     
     
       13. A cord safety device for a window covering, wherein the window covering comprises a head rail, a bottom rail, a covering material located between the head rail and the bottom rail, and several cords passing through the head rail and the covering material to reach the bottom rail; the cord safety device is used to limit or release at least two cords exposed at an outer side of the window covering, and the cord safety device comprises a first body and a second body corresponding to the first body, wherein the first body has a first inner side, and the second body has a second inner side, wherein:
 the first body comprises:
 a first pivot portion, disposed at a periphery position of the first body; 
 a first fixing portion, disposed at a periphery position with respect to the first pivot portion; 
 a first stop portion, disposed at a predetermined position of the first inner side and protruded towards the second body; 
 a first recess, disposed at a predetermined position of an upper periphery of the first body to provide at least two cords to slide therein; and 
 a guiding block, disposed on one end of the first stop portion adjacent to the first fixing portion, and having a guiding surface for guiding the cords; 
 
 the second body comprises:
 a second pivot portion, disposed corresponding to position of the first pivot portion, so as to be embedded with the first pivot portion; and 
 a second fixing portion, disposed corresponding to position of the first fixing portion, so as to be separably fixed with the first fixing portion. 
 
 
     
     
       14. The cord safety device as claimed in  claim 13 , wherein the second body further comprises a second stop portion located on the second inner side corresponding to the first stop portion. 
     
     
       15. The cord safety device as claimed in  claim 13 , wherein the first stop portion and the second stop portion are configured into camber structures with downward concaves. 
     
     
       16. The cord safety device as claimed in  claim 13 , wherein the second body further comprises a second recess disposed corresponding to the first recess. 
     
     
       17. The cord safety device as claimed in  claim 16 , wherein the first recess or/and the second recess forms with an arc surface along an edge of each recess and adjacent to one end side of each fixing portion. 
     
     
       18. The cord safety device as claimed in  claim 13 , wherein at least one cord sequentially slides to the first fixing portion along a path formed by the first stop portion, the guiding block, the guiding surface, and the first fixing portion in order, such that the first fixing portion is just separated from the second fixing portion in opposite direction with the first pivot portion as an axis center, and then the first pivot portion and the second pivot portion are completely separated. 
     
     
       19. The cord safety device as claimed in  claim 13 , wherein the first body further comprises a first scarf portion disposed on the first inner side and protruded towards the second body, and the second body further comprises a second scarf portion disposed corresponding to the first scarf portion, thereby accommodating the first scarf portion. 
     
     
       20. The cord safety device as claimed in  claim 13 , wherein the first body further comprises a first scarf portion protruded towards the second body, and the second body further comprises a second scarf portion disposed corresponding to the first scarf portion and protruded towards the first body, thereby being embedded with the first scarf portion. 
     
     
       21. The cord safety device as claimed in  claim 13 , wherein the first pivot portion has a arc-shaped recess, and the second pivot portion has a pivot pivoted to the arc-shaped recess. 
     
     
       22. The cord safety device as claimed in  claim 13 , wherein the first stop portion further has a stop recess at one end away from the guiding block, thereby preventing one of the cords from being separated from the first body. 
     
     
       23. The cord safety device as claimed in  claim 13 , wherein the second fixing portion is configured into an elastic zigzag element, for being fixed to a corresponding position of the first fixing portion.